My garage is lined with cement sheeting and then bagged, but a lot of the bagging is cracking up and breaking away, particularly around the joins and corners. I'm not sure there is a solution to repair (as it will likely keep happening), but was thinking I could line it with merbau decking as we have a lot of merbau around the house and the front fence. Does anyone know if this would work, by simply screwing the boards directly into the garage studs, or would you suggest building an additional frame to attach to the garage and screw the boards into that?